Question

помогите пожалуйста. ...

Answer 1

1)
8 × 7 = 56
3×7=21
5×7=35
21+35=56

2) 7×7=49
3×7=21
4×7=28
21+28=49

3) 9×7=63
4×7=28
5×7=35
28+35=63

4) 6×6=36
3×6=18
3×6=18
18+18=36

5) 8×6=48
2×6=12
6×6=36
12+36=48

6) 9×6=54
4×6=24
5×6=30
24+30=54

7) 9×9=81
3×9=27
6×9=54
27+54=81

8) 6×7=42
1×7=7
5×7=35
7+35=42